Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
1100242severely pollutedgood331excellent
1000244severely pollutedgood351excellent
0900257severely pollutedgood371excellent
0800205severely pollutedgood281excellent
0700191heavily pollutedgood281excellent
0600196heavily pollutedgood281excellent
0500193heavily pollutedgood271excellent
0400195heavily pollutedgood271excellent
0300179heavily pollutedgood241excellent
0200179heavily pollutedgood251excellent
0100171heavily pollutedgood241excellent
0000164heavily pollutedgood231excellent
2300146heavily pollutedgood231excellent
2200125moderately pollutedexcellent191excellent
2100113moderately pollutedexcellent161excellent
2000143heavily pollutedgood211excellent
1900145heavily pollutedexcellent151excellent
180091lightly pollutedexcellent121excellent
170089lightly pollutedexcellent131excellent
160081lightly pollutedexcellent111excellent
150087lightly pollutedexcellent121excellent
140081lightly pollutedexcellent111excellent
130059goodexcellent71excellent
120087lightly pollutedexcellent111excellent